As we all know, that we Australia is rich in natural ____
resources
举一反三
内容
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We all know that there are four seasons in a year.
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We all know that the normal hu...7 hours wakefulness.
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As we all know, Google is a very _______ (innovation) company.
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We all know that _____ speaks louder than words.
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Of all the energy we find in the natural world, by far the most powerful is the sun.